The three-month maximum period between a person's entry into a new situation and a person's complete screwing up of said situation or essential elements of it. This phenomenon is backed by massive amounts of studies in social psychology and even more massive amounts of personal testimony from bitter, angry people.

Susannah just broke down and gave her new roommate specific instructions on where she would prefer her to travel on her next vacation. That honeymoon period is over.

The period (usually two or three weeks) following the purchase of a new electronic gadget, when you are so much in love with your new gizmo that everything about it seems perfect. It doesnt matter how good or bad it actually is, the honeymoon period will always exist (believe it or not, even Vista users had a honeymoon period with their new OS). After the end of the honeymoon period, logic takes over emotion, and you can finally judge your new gadget more objectively, and thus decide whether the purchase was a success or failure. The duration of the honeymoon period is proposal to how good the gadget actually is.

Same vista user, three weeks later: “Vista sucks! What‘s the point of having all those visual effects if the system is dog slow, and the bundled multimedia tools dont support any format that matters, like mp4 or divx avi“ (honeymoon period ended)

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The intentional advance planning undertaken by an engaged female to schedule her upcoming wedding ceremony to correspond with her monthly menstrual cycle, in an effort to indoctrinate the groom, as early as possible, as to who will be running the show, nookiewise.

"We went to Cancun right after our wedding, and I only got one hand job during our honeymoon - period."

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(n.) After a successful candidates' election, or monarchs' ascention to the throne, the media and public will grant them the benefit of the doubt as to whether or not they can actually do thier jobs. After this, usually a month in duration, the scrutiny will begin.

After Bushs' honeymoon period, the world, now with Clinton firmly in the past, started to call him evil and retarded.

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The unfortunate circumstance where after months of planning, excitement, and anticipation, the newly wed couple is surprised with a poorly timed menstruation cycle, effectively ending the night of extra special love making before it even begins...

Rob and Cindy just wanted the wedding day to be over with so they could begin a crazy night of hot love making but the mood was ruined when Cindy found she had gotten a honeymoon period...